Were it not for

【答】 在这里Were it not for = If it were not for.这是非真实条件从句.它的意思是“如果没有”、“要不是由于”.在if条件从句中,如果含有were, should, had等动词,则可以通过主谓倒装的方法来取消连接词if,从而变成无连接词条件从句.在正式语体中,if it were not for可以写成无连词的形式：were it not for.例如：
Were it not for your help, I would still be homeless. 要是没有你的帮助,我仍然会无家可归.
They might live quite comfortably were it not for a quarrel with their next door neighbor. 他们如果没有和邻居吵架,可能会过得很舒服.
如果要表示过去的非真实的条件,则使用if it had not been for.例如：
If it hadn’t been for the rain, we would have had a good harvest. 要是没有下雨的话,我们就会获得大丰收了.
If it had not been for Margaret, I might not have understood. 要是没有玛格丽特,我可能还没有弄明白.
在正式语体里, if it had not been for 可以写成无连词的形式： had it not been for.例如：
Had it not been for the doctor’s care, I should not be speaking to you now. 要是当时没有医生的治疗,我现在就不能和你说话了.